Pencil-sharpener.



W. M. MoKINNBY. PENCIL SHARPBNER. APPLICATION FILED FEB. 13, 1912.

Patented Nov. 19, 1912.

WILLIAM IVI. MCKINNEY, OF GROWS LANDING, CALIFORNIA.

PENCIL-SHARPENER.

Specification of Letters Patent.

Application filed February 13, 1912.

Serial No. 677,289.

To all whom it may concern:

Be it known that I, W'ILLIAM M. MCKIN- NEY, a citizen of theUnited States, residing at Crows Landing, in the county of Stanislaus and State of California, have invented new and useful Improvements in Pencil- Sharpeners, of which the following is a specification.

The invention relates to a pencil attachment and more particularly to the class of pencil Sharpeners.

The primary object of the invention is the provision of a pencil sharpening device in which an adjustable blade is carried so that the same-may be positioned for sharpening a pencil when inserted in the device, the device being designed as a ferrule to be mounted uponthe end of a pencil and carries an eraser for use with thepencil.

Another object of the invention is the provision of an attachment of this character which can be mounted upon a pencil so as to be handy andconvenient for the user of the pencil when it is desired to sharpen the same, the blade of the sharpener being readily adjustable so that the pencil may be sharpened to provide either a long or short point optional with the user thereof.

A further object of the invention is the provision of a pencil sharpener of this character which is simple in construction, reliable and efficient in its operation, neat and attractive in appearance and inexpensive in manufacture.

With these and other objects in view the invention consists of the construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a side elevation of a pencil sharpening device constructed in accordance with the invention and applied to a pencil. Fig. 2 is a sectional view on the line 2-2 of Fig. 1. Fig. 3 is a sectional view on the line 3-3 of Fig. 1 looking in the direction of the arrows. Fig. 4 is a sectional view on the line 44 of Fig. 1 looking in the direction of the arrows. Fig. 5 is a view similar to Fig. 4 showing the sharpening blade in shifted position. Fig. 6 is a side elevation showing the blade in shifted position from that shown in Fig. 1. Fig. 7 is a side elevation of the sharpening device the same being partly in section and showing a pencil inserted therein for the sharpening of the same. Fig. 8 is'a perspective view of the blade.

Similar Reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawings by numerals 5 designates a pencil which is of the ordinary well-known construction, sharpened at one end to form a point 6, and adapted to be mounted at the opposite end is the pencil sharpening device presently described.

The pencil sharpening device comprises a tubi-form ferrule 7 preferably constructed from metal and in one end of which is adapted to be received either end of the pencil 5, but when not in use the said ferrule is mounted upon the unsharpened end of the pencil so as to be conveniently car ried thereon. Fixed in the opposite or outer end of the ferrule 7 is a rubber eraser -8 to be used in the ordinary well-known manner, the end of the ferrule receiving the eraser 8 being stamped or otherwise formed with threads 9 for detachably holding the said eraser therein as usual.

Provided in one side of the ferrule at the end adapted to receive the pencil is an opening 10, the marginal edge of which is outstruck to form a bead 11 in which are provided apertures 12 loosely receiving pivot studs 13 at opposite ends of a swinging pencil sharpening blade 14, one edge of which is beveled at 15 to form a cutting edge, the blade 14 being tapered from one end to the other so that the width of the blade gradually increases from one end thereof to the other. The said blade 14 is outwardly bowed so as to bevel the end of the pencil when being cut for the sharpenin thereof.

Securely mounted in the ferrule? between the eraser 8 and the blade 14 is a disk forming a partition 16 to which is centrally connected by means of a pivot 17, a bell crank lever 18 one arm of which projects outwardly through a guide slot 19 in the fer rule to the outside thereof and is formed with a finger knob 20, while the other arm is formed with a cam slot 21 in which is engaged a guide lug 22 formed on and rising from the uppermost edge of the blade 14 so that on shifting the lever 18 the said blade may be moved inwardly of the ferrule 7.

Patented Nov. 1a, 1912.

The blade is normally positioned when not 'i J'the ferrule so that it may be carried upon the same.

To hold the blade in normal position there is provided a spring member 23 which is suitably fastened at one end in the partition 16 while its opposite end plays against the lever 18 so that when the blade 14: is moved inwardly in the ferrule 7 it will be held tensioned by the spring 23. Of course it is understood that the blade is gradually moved inwardly when the pencil is inserted therein for the sharpening thereof thereby cutting away the body of the pencil to form a point thereon.

From the foregoing description, taken in connection with the accompanying drawing, it is thought that the construction and operation of the invention will be clearly understood, and therefore, a more extended explanation has been omitted.

6 WVhat is claimed is l 1. A pencil sharpener comprising a ferrule having an opening in one side thereof,

a blade pivotally connected to the side wall of the ferrule and movable toward and away from the opening therein, means for shifting the blade, means for tensioning the blade when shifted inwardly within the ferrule, and an off-set bead formed about the opening in the ferrule and adaptedto receive the blade when in normal position to "hold its inner surface flush with the inner surface of the ferrule.

2. A pencil sharpener comprising a ferrule having an opening in one side thereof, a blade pivotally connected to the side wall of the ferrule and movable toward and away a from the opening therein, means for shifting the blade, means for tensioning the blade when shifted inwardly within the ferrule, an off-set bead formed about the opening in the ferrule and adapted to receive the blade when in normal position to hold its inner surface flush with the innersurface Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

